ref: 3efb5bbb4061056e523858b134c555949591efe2
dir: /module/auth9.m/
Auth9: module
{
PATH: con "/dis/lib/auth9.dis";
#
# plan 9 authentication
#
ANAMELEN: con 28; # maximum size of name in previous proto
AERRLEN: con 64; # maximum size of errstr in previous proto
DOMLEN: con 48; # length of an authentication domain name
DESKEYLEN: con 7; # length of a des key for encrypt/decrypt
CHALLEN: con 8; # length of a plan9 sk1 challenge
NETCHLEN: con 16; # max network challenge length (used in AS protocol)
SECRETLEN: con 32; # max length of a secret
# encryption numberings (anti-replay)
AuthTreq: con 1; # ticket request
AuthChal: con 2; # challenge box request
AuthPass: con 3; # change password
AuthOK: con 4; # fixed length reply follows
AuthErr: con 5; # error follows
AuthMod: con 6; # modify user
AuthApop: con 7; # apop authentication for pop3
AuthOKvar: con 9; # variable length reply follows
AuthChap: con 10; # chap authentication for ppp
AuthMSchap: con 11; # MS chap authentication for ppp
AuthCram: con 12; # CRAM verification for IMAP (RFC2195 & rfc2104)
AuthHttp: con 13; # http domain login
AuthVNC: con 14; # VNC server login (deprecated)
AuthTs: con 64; # ticket encrypted with server's key
AuthTc: con 65; # ticket encrypted with client's key
AuthAs: con 66; # server generated authenticator
AuthAc: con 67; # client generated authenticator
AuthTp: con 68; # ticket encrypted with client's key for password change
AuthHr: con 69; # http reply
Ticketreq: adt {
rtype: int;
authid: string; # [ANAMELEN] server's encryption id
authdom: string; # [DOMLEN] server's authentication domain
chal: array of byte; # [CHALLEN] challenge from server
hostid: string; # [ANAMELEN] host's encryption id
uid: string; # [ANAMELEN] uid of requesting user on host
pack: fn(t: self ref Ticketreq): array of byte;
unpack: fn(a: array of byte): (int, ref Ticketreq);
};
TICKREQLEN: con 3*ANAMELEN+CHALLEN+DOMLEN+1;
Ticket: adt {
num: int; # replay protection
chal: array of byte; # [CHALLEN] server challenge
cuid: string; # [ANAMELEN] uid on client
suid: string; # [ANAMELEN] uid on server
key: array of byte; # [DESKEYLEN] nonce DES key
pack: fn(t: self ref Ticket, key: array of byte): array of byte;
unpack: fn(a: array of byte, key: array of byte): (int, ref Ticket);
};
TICKETLEN: con CHALLEN+2*ANAMELEN+DESKEYLEN+1;
Authenticator: adt {
num: int; # replay protection
chal: array of byte; # [CHALLEN]
id: int; # authenticator id, ++'d with each auth
pack: fn(f: self ref Authenticator, key: array of byte): array of byte;
unpack: fn(a: array of byte, key: array of byte): (int, ref Authenticator);
};
AUTHENTLEN: con CHALLEN+4+1;
Passwordreq: adt {
num: int;
old: array of byte; # [ANAMELEN]
new: array of byte; # [ANAMELEN]
changesecret: int;
secret: array of byte; # [SECRETLEN] new secret
pack: fn(f: self ref Passwordreq, key: array of byte): array of byte;
unpack: fn(a: array of byte, key: array of byte): (int, ref Passwordreq);
};
PASSREQLEN: con 2*ANAMELEN+1+1+SECRETLEN;
# secure ID and Plan 9 auth key/request/reply encryption
netcrypt: fn(key: array of byte, chal: string): string;
passtokey: fn(pw: string): array of byte;
des56to64: fn(a: array of byte): array of byte;
encrypt: fn(key: array of byte, data: array of byte, n: int);
decrypt: fn(key: array of byte, data: array of byte, n: int);
# dial auth server
# authdial(netroot: string, authdom: string): ref Sys->FD;
# exchange messages with auth server
_asgetticket: fn(fd: ref Sys->FD, tr: ref Ticketreq, key: array of byte): (ref Ticket, array of byte);
_asrdresp: fn(fd: ref Sys->FD, n: int): array of byte;
init: fn();
};